Sébastien Derriere IVOA interoperability meeting Victoria 2010 may 21 Semantics summary
Dec 18, 2015
Sébastien DerriereIVOA interoperability meeting
Victoria 2010 may 21
Semantics summary
VO ArchitectureVO Architecture
Semantics standardsSemantics standards• UCD
– method– words
• Vocabularies
Existing standards: VocabulariesExisting standards: Vocabularies
• Use in other WGs– use/extend existing vocabularies– issues in discovering, accessing, browsing
vocabularies– define precisely the use cases !
• Need for – cookbooks, examples
– list of use cases– vocabulary repository with versioning
Existing standards: UCDsExisting standards: UCDs
• Updated list of words : WD → PR → REC• Wiki page with UCD tips
New standardsNew standards
• Units• Ontology
UnitsUnits
• Core IVOA component
• Contribution from Semantics WG to DM
Ontology standardOntology standard
• Identified as core IVOA component for scientific use case : queries by source class
• Ontology of astronomical object types– IVOA Note by INAF&CDS
• What gets standardized ?– Maintenance & frequent updates ? (cf Gene
ontology)– Adopt same approach as UCDs : REC describing
process and have the ontology itself as a separate document
Semantic applicationsSemantic applications
• Build simple tools or libraries– simple reuse in the VO
• Examples :– suggest from vocabulary– query rewriting with
hierarchy
Advanced semanticsAdvanced semantics
• Semantic annotations in HTML pages : RDFa• Semantics for KDD• ...
AstroInformatics2010AstroInformatics2010
• AstroInformatics 30 years behind BioInformatics !
• June 19 = Astrosemantics